Fuel nozzle for internal-combustion engines



June 12, 1928.

| v. HOSFORD FUEL NOZZLE FOR'INTERNAL COMBUSTION ENGINES Filed-0911.. 11. 1926 :9! {5 INVFNTOR 76 jeazzarafzsfonf Y ATTORNEY Patented June 12, 192

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LEONARD v. nosronn, or ronrnnivn, 'onneon.

FUEL NozzLE FOR INTI}REAL-COMBUSTION, Enemies. I

Application filed October 11, 1926.. Serial No. 141,009.

My invention has for its object to provide chew and useful fuel nozzle unit for internal combustion engines, particularly of the Diesel type, and it primarily has for its object to provide a nozzle with a removable nozzle proper so constructed that it will be comparatively inexpensive to make and maintenance Costs will be minimum.

More specifically the. invention provides an improved nozzleunit so constructed thzit r the danger of clogging is reduced to a mimmum and so constructed 'whereby in the, event that the oil escape openings become enlarged by the burning action or heat the fuel distributing nozzle may be ground further into its casings seat and the diameter of the oil outlets be thus reduced to the properarea. v i Another object of the invention is to provide a structure in which the nozzle core andthe nozzleczising may be removed as a unit. from the remainder of the device without the necessity of disassembling it in case it becomes necessary to clean or repair the parts. l v

lilore subordinately invention also resides in those novel features of construction, com bination and arrangement of parts, all of which willbe first fully described, then be specifically pointed out in the appended claims, reference being had to the accompanying drawing in which v I Figure 1 is a vertical longitudinal section of a unit constructed in accordance with my invention, i

Figure 2 is a detail elevation of the n0zzle core member. 7 i

Figure 3 is a top plan viewof the same.

Figure l is a detail vertical section of the nozzle core members casing. l l I Figure 5 is a detail vertical section of the nozzle core and its cesingpmeinber before the same are drilled to produce the outlet apertures. s i

Figure 6 is a view similar to Figure 5 withone outlet aperture" finished undenother partly drilled.

In the drawing, in which like numerals of reference indicate like parts in all the figures, 1 indicates the bascuof the unit which is provided with. the usual bolt holes for attachment to a cylinder head and 2 indicates the upper casing part while 3 represents the csp nut that closes, the upper end of the upper casing part 2. i

A lower part 4 extends below the base 1 osted.

and hes its end stepped end" threaded to re ceivc the nozzle holding cap 12 hereinafter again referred to. v i I t l i The upper casing part 2 has chamber 5 and the lower casing-part 4 has a' passage 6, the letter beingprovided with a valve seat 7. Between the chamber 5 and the passage 6 there is located-u glandB and gland nut .9 to: p rcvent communication between the chamber and the passage around the needle valve 27, die latter" cooperating with the sent "7 to control the fiow of lubricant from the source to-the outlet nozzle.

The threaded end 10 ofthe lower casing part 4: is shouldered, as at 11, to fit the COT", rcspondingpurt of the cap 12,;the cap 12 having the chamber 13 and bore 14; as indi the :bore 14 being of lesser diameter than thetof the casing 13 so as to conform to the nozzle casing sleeve 15. v

y The nozzle core 16 consists of e stem-like body and a head separated by .an'annular oil groove as shown. The nozzle cores stem is threaded, vas at 1'7, and is provided with {L central jeed passage- 18 having lateral passages 19 and oil grooves 20, the latter delivering into;thefannulur'groove 21 before referred to.

i It will be seen that the nozzle casing sleeve hush cone seat 24 to cooperate, with the cone suriface 25 otthe nozzle cores head.

1 In order to'producel the outlet ports of the nozzle I drillv holes, the axes of which he along the conical surfuces24-2 5, the

outlets being produced by a large drill to producevthe external outletportion22 and a small drill to produce the inner parts of the passage numbered 28 thedrill holes 22 und 23 beinginz dc partlyin the sleeve15 and partly in'the hend inthe nozzle core as best indicated in Figures 5] and 6 of the drawing. 9 I 1 The end of thenozzle core has a cross slot 26 fore screw driver or valvef grinding' tool, by means ofwhieh the surfaces 2l--25 maybe groundtogether; l l

The needle valve 27 is held to its closed position by a collar 28 on the valve rod and a spring 29 interposed between the collar and the cup nut 18. v

30 designates the leed-in duct for delivering the oil from the source of supply through the base 1 to the passage 6. It will be seen that when it is desired to clean or repair the nozzle end of the unit it is only necessaryto unbolt the unit from the or desirable.

If the unit is attached to a removable cyl' inder head of an engine and the cylinder head is removed for the purpose of cleaning out carbon for example it will not be necessary to remove the unit from the cylinder head in order to clean the nozzle tip. All thatwould be required would be to unscrew the nozzle core and remove it and the nozzle casing sleeve 15 from the inner side 'of the cylinder head. Then, after cleaning the passages in the nozzle core, the parts may be restored by reversing the operation of removal.

Other advantages of my invention will be apparent to those skilled in the art.

hat I claim is:

1. A fuel oilnozzle for internal combustion engines and the like, comprising a casing having an oil passage and provided with a threaded end, a nozzle holding cap threadedonto said threaded end, said cap having a chamber with a restricted outletpassage, a nozzle core-casing-sleeve located in said restricted outlet, jam nuts in said cap, chamber and a nozzle core associated with said nozzle core-casing-sleeve and adapted to receive said jam nuts to secure said nozzle core and its casing-sleeve together, said nozzle core having fluid passages for conveying the fuel from said oil passage to atmosphere.v

2. A fuel oil nozzle for internal combustion engines and the like, comprising a casing having an oil passage and provided with a threaded end. a nozzle holding cap threaded onto said threaded end, said cap having a chamberwith a restricted outlet passage, a nozzle core-casing-sleeve located in said restricted outlet, jam nuts in said cap chamber and a nozzle core associated with said nozzle core-easingsleeve and adapted to re ceive said j am nuts to secure said nozzle core and its casing-sleeve together, said nozzle c'ore having a central bore communicating with said oil passage and extending inwardly from one end, and having oil outlet ducts communicating with said bore at its other end.

A fuel oil nozzle for internal combustion engines and the like, comprising a casing having an oil passage and provided with a threaded end, a nozzle holding cap threaded onto said threaded end, said cap having a chamber with a restricted outlet passage, a nozzle core-casing-sleeve located in said restricted outlet, jam nuts in said cap chamber and a nozzle core associated with said nozzle eorc-casingsleeve and adapted to reccive said jam nuts to secure said nozzle core and its casing-sleeve together, said nozzle core having a central bore communicating with said oil passage extending inwardly from one end and having oil grooves communicating with said bore at its other end, said nozzle core and its casing-sleeve having complementary conical seats and drill holes in communication with said oil grooves and with atmosphere for the purpose specified.

4. A fuel nozzle for internal combustion engines and the like, which comprises a casing having an oil passage and provided with a threaded lower end, a capthreaded on said lower end and having a chamber and a restricted outlet, a nozzle-casing-sleeve located in said restricted outlet, a jam nut in the caps chamber, a nozzle core passing through said sleeve and having a head portion to engage the same and having a threaded portion to receive the jam nut, said nozzle core having means to pass oil from said oil passage to atmosphere.

5. A fuel nozzle for internal combustion engines and the like, which comprises a casing having an oil passage and provided with a threaded end, a cap threaded on said end and having a chamber and a restricted outlet, a nozzle-casing-sleeve located in said restricted outlet, a jam nut in the caps chamher, a nozzle core passing through said sleeve and having a head portion to engage the same and having a threaded portion to receive the jam nut, said nozzle core having an oil passage communicating with the aforesaid oil passage and said sleeve and head portion having complementary conical seats with ducts to deliver the oil from said cores oil passage to atmosphere.

6. A fuel nozzle for internal combustion engines and the like, which comprises a casing having an oil passage and provided with a threaded end, a cap threaded on the lower end and having a chamber and a restricted outlet, a nozzle-casing-sleeve located in said restricted outlet, a 3am nut in the caps chamber, a nozzle core passing through said sleeve and having a head portion to engage the same and having a threaded portion to receive the 1am nut, said nozzle core having an oil passage communicating with the aforesaid oil passage and said sleeve and head portion havingcomplementary conical seats with ducts to deliver the oil from said cores oil passage to atmosphere, said nozzle core and sleeve oil passage and ducts including drill holes partly located in the sleeve and partly located inthe head for the purposes specified.

7. In fuel spray nozzles wherein is provided a base having a threaded extension ical head to engage said conical seat and to receive said jani nuts, whereby to hold said jam nuts and said sleeve andsaid nozzle core 15 together as a unit, said nozzle core having Oll passages and sald nozzle core and sa1 sleeve havingcomplementary drill hole portions, said drillhole portions being located to effect communication between said 011 80 passages and the atmosphere and said oil passages be ng 1n communication with said central passage substantially as shown and g for the purposes described.

LEONARD v. HOSFORD. 

